Genesis 1:26
Then God said, Let Us make mankind in Our image.
Ecclesiastes 12:1
Remember also your Creators in the days of your youth.
Isaiah 54:5
For your husbands are your Makers, Whose name is Yahweh of armies.
In most Bible translations the singular form is used, but this is not correct, the words "creators, husbands, makers" in the respective verses are plural in Hebrew.
Now some would say that it is "pluralis excellentiae" or "Royal we", but if that were really the case, why don't we see this with the kings in the Bible? I have looked, not one king, Jewish or Gentile, used this kind of speech in the Bible, all kings speak about themselves in the singular.
Am I saying that there is more than one God? No, but I believe the Bible teaches one God who is a unity in himself.